(A spiral which has very short segments, which makes commands finish very fast.)
(So a lot of data needs to be sent.)
G21
F10000.00000
S1000.00000
G0 Z2.0000
 X71.8456 Y75.0405
G1 Z0.0000
 X71.9427 Y74.9978
 X72.0147 Y74.9451
 X72.0637 Y74.8841
 X72.0918 Y74.8163
 X72.1009 Y74.7435
 X72.0929 Y74.6670
 X72.0698 Y74.5886
 X72.0337 Y74.5100
 X71.9868 Y74.4326
 X71.9308 Y74.3582
 X71.8676 Y74.2884
 X71.7996 Y74.2246
 X71.7284 Y74.1686
 X71.6563 Y74.1220
 X71.5851 Y74.0863
 X71.5170 Y74.0632
 X71.3413 Y74.0336
 X71.1723 Y74.0316
 X71.0112 Y74.0548
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 X70.7142 Y74.1693
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 X70.4551 Y74.3598
 X70.3414 Y74.4784
 X70.2390 Y74.6092
 X70.1486 Y74.7507
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 X69.9554 Y75.2160
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 X69.8978 Y75.5388
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 X69.9142 Y75.9721
 X69.9690 Y76.2325
 X70.0544 Y76.4781
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 X66.3120 Y73.4356
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 X67.1045 Y79.4198
 X67.3087 Y79.6736
 X67.5254 Y79.9161
 X67.7535 Y80.1470
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 X68.2422 Y80.5731
 X68.5018 Y80.7678
 X68.7702 Y80.9501
 X69.0474 Y81.1194
 X69.3325 Y81.2757
 X69.6250 Y81.4186
 X69.9241 Y81.5480
 X70.2295 Y81.6636
 X70.5404 Y81.7651
 X70.8561 Y81.8522
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 X71.4999 Y81.9825
 X71.8266 Y82.0251
 X72.1559 Y82.0523
 X72.4870 Y82.0639
 X72.8193 Y82.0597
 X73.1523 Y82.0394
 X73.4853 Y82.0027
 X73.8176 Y81.9494
 X74.1487 Y81.8791
 X74.5328 Y81.7764
 X74.9061 Y81.6541
 X75.2683 Y81.5131
 X75.6195 Y81.3541
 X75.9589 Y81.1779
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 X79.1823 Y77.6253
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 X78.1283 Y69.3022
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 X76.2737 Y67.5725
 X75.9196 Y67.3401
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 X75.1798 Y66.9264
 X74.7957 Y66.7456
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 X64.3899 Y68.9595
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 X63.7837 Y69.6860
 X63.5078 Y70.0703
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 X63.0116 Y70.8759
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 X61.8293 Y74.4713
 X61.7779 Y74.9483
 X61.7493 Y75.4286
 X61.7439 Y75.9113
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 X61.8039 Y76.8801
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 X67.2258 Y84.7934
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 X70.6802 Y86.0030
 X71.2029 Y86.0822
 X71.7301 Y86.1362
 X72.2607 Y86.1650
 X72.7940 Y86.1686
 X73.3287 Y86.1461
 X73.8642 Y86.0966
 X74.3992 Y86.0201
 X74.9331 Y85.9171
 X75.4647 Y85.7860
 X76.0454 Y85.6104
 X76.6095 Y85.4061
 X77.1567 Y85.1741
 X77.6866 Y84.9156
 X78.1985 Y84.6314
 X78.6921 Y84.3228
 X79.1670 Y83.9907
 X79.6226 Y83.6362
 X80.0585 Y83.2602
 X80.4741 Y82.8638
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 X81.2431 Y82.0143
 X81.5955 Y81.5631
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 X84.0005 Y74.0159
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 X76.8226 Y63.1666
 X76.2547 Y62.9103
 X75.6750 Y62.6804
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 X73.8758 Y62.1556
 X73.2597 Y62.0371
 X72.6375 Y61.9476
 X72.0102 Y61.8877
 X71.3787 Y61.8581
 X70.7445 Y61.8590
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 X57.6645 Y74.8516
 X57.6344 Y75.5333
 X57.6373 Y76.2182
 X57.6740 Y76.9049
